Hubble breaks the distance record with a redshift of 11.1

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Discussion Overview

The discussion centers around the recent measurement of a galaxy with a redshift of 11.1, exploring its implications for current cosmological theories and the concept of limiting values for redshift. The scope includes theoretical implications and the significance of astronomical measurements.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants suggest that the new redshift measurement may indicate a need to revise current theories, as it challenges the idea of reaching a limiting value for redshift.
  • Others point out that current theories do not predict a limiting value for redshift, noting that the Cosmic Microwave Background (CMB) has a much larger redshift of about 1000, which is not directly comparable to the redshift of individual galaxies.
  • A participant expresses a desire for more measurements to clarify the situation and mentions anticipation for future observations from the James Webb Space Telescope (JWST).
  • One participant shares their background in physics, emphasizing their interest in cosmology despite not having formal education in the field.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether current theories need revision; instead, multiple competing views remain regarding the implications of the new redshift measurement.

Contextual Notes

There is uncertainty regarding the interpretation of redshift measurements and their implications for cosmological models. The discussion reflects differing perspectives on the significance of the new findings and the need for further data.

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Tanelorn said:
Does this mean that some of theories need revision? We do not appear to reaching a limiting value!

Our current theories do not predict any "limiting value" for redshift. We have already measured a redshift much larger than 11.1: the redshift of the CMB, which is about 1000. This is just the record for the measured redshift of a single object.

[Btw, if you label a thread as "A", that implies that you have a graduate level understanding of the subject matter. This question is really a "B" question, and I have relabeled the thread accordingly.]
 
Thanks for replies guys.

I know the CMBR redshift is ~1000, but I was expecting to see a tangential limiting value for galaxy redshift at some point. I guess we need more measurements? Hopefully I will still be here to see the JWST measurements.

Btw I am a Physics Grad, just a very long time ago, specializing in Radio and Microwave Frequencies. Worked on Cyclotrons, Plasma Generators and 3G Transmitters mainly, for nearly 40 years.
But point taken, Cosmology was not a course I could take back then, even though it is one of the most interesting subjects for me now.
 
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